func (inst *instance) Copy(hostSrc string) (string, error) {
vmDst := filepath.Join(inst.cfg.Workdir, filepath.Base(hostSrc))
if err := fileutil.CopyFile(hostSrc, vmDst, false); err != nil {
return "", err
}
if err := os.Chmod(vmDst, 0777); err != nil {
return "", err
}
return vmDst, nil
}
func (inst *instance) Copy(hostSrc string) (string, error) {
vmDst := filepath.Join("/", filepath.Base(hostSrc))
dst := filepath.Join(inst.sandboxPath, vmDst)
if err := fileutil.CopyFile(hostSrc, dst, false); err != nil {
return "", err
}
if err := os.Chmod(dst, 0777); err != nil {
return "", err
}
return vmDst, nil
}
func ctorImpl(cfg *vm.Config) (vm.Instance, error) {
inst := &instance{
cfg: cfg,
image: filepath.Join(cfg.Workdir, "image"),
}
closeInst := inst
defer func() {
if closeInst != nil {
closeInst.Close()
}
}()
if err := validateConfig(cfg); err != nil {
return nil, err
}
os.Remove(inst.image)
if err := fileutil.CopyFile(inst.cfg.Image, inst.image, true); err != nil {
return nil, fmt.Errorf("failed to copy image file: %v", err)
}
var err error
inst.rpipe, inst.wpipe, err = os.Pipe()
if err != nil {
return nil, fmt.Errorf("failed to create pipe: %v", err)
}
for sz := 128 << 10; sz <= 2<<20; sz *= 2 {
syscall.Syscall(syscall.SYS_FCNTL, inst.wpipe.Fd(), syscall.F_SETPIPE_SZ, uintptr(sz))
}
if err := inst.Boot(); err != nil {
return nil, err
}
closeInst = nil
return inst, nil
}